Question

我正在尝试使用我的java应用程序发送电子邮件，但它总是给我一个连接错误。所以我的代码看起来像这样：

public function addModelname(\Some\Where\Domain\Model\Modelname $modelname){...}

当然我提供了有效的信息（使用我的Gmail帐户）。这是我回来的错误：

import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;

public class SendMail {

public static void main(String [] args) {

    String to = "something@gmail.com";
    String from = "fromsomeone@gmail.com";
    String host = "localhost";

    Properties properties = System.getProperties();
    properties.setProperty("mail.user", "fromsomeone");
    properties.setProperty("mail.password", "passwordForSomeone");
    properties.setProperty("mail.smtp.host", host);

    Session session = Session.getDefaultInstance(properties);


    try {

        MimeMessage message = new MimeMessage(session);
        message.setFrom(new InternetAddress(from));
        message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
        message.setSubject("subject typed");
        message.setText("This is actual message which is just some lines");
        Transport.send(message);

    }catch (MessagingException mex) {
        mex.printStackTrace();
    }
}
}

有人可以帮助我，我的代码出了什么问题？谢谢！

Answer 1

这将有助于您通过Gmail帐户发送邮件;

public class MailMan {
Session session = null;

public MailMan() {
    if (session == null) {
        init();
    }
}

public void init() {

    Properties props = new Properties();
    props.put("mail.smtp.host", "smtp.gmail.com");
    props.put("mail.smtp.socketFactory.port", "465");
    props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
    props.put("mail.smtp.auth", "true");
    props.put("mail.smtp.port", "465");

    session = Session.getDefaultInstance(props, new javax.mail.Authenticator() {
        protected PasswordAuthentication getPasswordAuthentication() {
            return new PasswordAuthentication("EMAIL", "PASSWORD");
        }
    });
    if (session != null) {
        System.out.println("[OK]");
    } else {
        System.out.println("[NOK]");
    }
}

public void sendMail() {
    if (session == null) {
        System.exit(0);
    }
    try {
        String messageText = "";
        Message message = new MimeMessage(session);
        try {
            message.setFrom(new InternetAddress("no-reply", "No Reply"));
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        message.setReplyTo(InternetAddress.parse("no-reply"));


        message.addRecipients(Message.RecipientType.TO, InternetAddress.parse("to_email")); 
        message.setSubject("TEST");
        message.setText(messageText);

        Transport.send(message);

        System.out.println("[OK]");

    } catch (MessagingException e) {
        e.printStackTrace();
        System.out.println("Not Sent...");
    }
 }
}

主要班级;

public class SendMail {

public static void main(String[] args) {
    MailMan ma = new MailMan();
    ma.sendMail();

  }
}

毕竟你应该打开“访问不太安全的应用程序”。

Answer 2

你可以尝试改变：

properties.setProperty("mail.smtp.host", host);

为：

properties.setProperty("mail.smtp.host", "smtp.gmail.com");

Java邮件有连接错误

2 个答案: